make_malloc.c revision 1.20
1/* $NetBSD: make_malloc.c,v 1.20 2020/10/01 22:42:00 rillig Exp $ */ 2 3/*- 4 * Copyright (c) 2009 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#include <stdio.h> 30#include <stdlib.h> 31#include <string.h> 32#include <errno.h> 33 34#include "make.h" 35 36MAKE_RCSID("$NetBSD: make_malloc.c,v 1.20 2020/10/01 22:42:00 rillig Exp $"); 37 38#ifndef USE_EMALLOC 39 40/* die when out of memory. */ 41static MAKE_ATTR_DEAD void 42enomem(void) 43{ 44 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(ENOMEM)); 45 exit(2); 46} 47 48/* malloc, but die on error. */ 49void * 50bmake_malloc(size_t len) 51{ 52 void *p; 53 54 if ((p = malloc(len)) == NULL) 55 enomem(); 56 return p; 57} 58 59/* strdup, but die on error. */ 60char * 61bmake_strdup(const char *str) 62{ 63 size_t len; 64 char *p; 65 66 len = strlen(str) + 1; 67 if ((p = malloc(len)) == NULL) 68 enomem(); 69 return memcpy(p, str, len); 70} 71 72/* Allocate a string starting from str with exactly len characters. */ 73char * 74bmake_strldup(const char *str, size_t len) 75{ 76 char *p = bmake_malloc(len + 1); 77 memcpy(p, str, len); 78 p[len] = '\0'; 79 return p; 80} 81 82/* realloc, but die on error. */ 83void * 84bmake_realloc(void *ptr, size_t size) 85{ 86 if ((ptr = realloc(ptr, size)) == NULL) 87 enomem(); 88 return ptr; 89} 90#endif 91 92/* Allocate a string from start up to but excluding end. */ 93char * 94bmake_strsedup(const char *start, const char *end) 95{ 96 return bmake_strldup(start, (size_t)(end - start)); 97} 98